--- title: "Professional Skills - José DA COSTA" description: "A comprehensive overview of my 10 core competencies: 6 soft skills and 4 hard skills" locale: "en" canonical: "https://portfolio.josedacosta.info/en/skills" source: "https://portfolio.josedacosta.info/en/skills.md" html_source: "https://portfolio.josedacosta.info/en/skills" author: "José DA COSTA" type: "page" generated_at: "2026-04-23T06:06:05.141Z" --- # Professional Skills A comprehensive overview of my 10 core competencies: 6 soft skills and 4 hard skills Skills organized by domain: soft skills (human competencies) and hard skills (technical competencies) ## Key numbers - Total pillar skills: 10 (6 soft + 4 hard) - Academic competencies from education/certification: 59 - Average mastery level: 9.0/10 ## Soft Skills Human and behavioral competencies **Leadership & Team Management** (level 9/10) _Leading teams and driving project success_ Proven ability to lead cross-functional teams, mentor developers, and drive project success through effective team coordination and motivation. Keywords: team leadership, mentoring, project coordination, motivation [Detailed article (Markdown)](https://portfolio.josedacosta.info/en/skills/leadership-team-management.md) **Communication & Collaboration** (level 10/10) _Bridging technical and business communication_ Excellent communication skills with stakeholders, clients, and team members. Expert in facilitating collaboration across departments and technical/non-technical audiences. Keywords: stakeholder management, collaboration, presentation, documentation [Detailed article (Markdown)](https://portfolio.josedacosta.info/en/skills/communication-collaboration.md) **Problem Solving & Critical Thinking** (level 9/10) _Analytical approach to complex challenges_ Strong analytical mindset with ability to break down complex problems, identify root causes, and develop innovative solutions. Keywords: analytical thinking, root cause analysis, innovation, debugging [Detailed article (Markdown)](https://portfolio.josedacosta.info/en/skills/problem-solving-critical-thinking.md) **Adaptability & Learning Agility** (level 10/10) _Rapid learning and adaptation to change_ Quick learner who thrives in fast-paced environments. Continuously updating skills to stay current with evolving technologies and methodologies. Keywords: continuous learning, flexibility, tech trends, quick adaptation [Detailed article (Markdown)](https://portfolio.josedacosta.info/en/skills/adaptability-learning-agility.md) **Project Management** (level 8/10) _End-to-end project delivery and planning_ Experience managing projects from conception to delivery, using Agile methodologies, sprint planning, and effective resource allocation. Keywords: agile, scrum, sprint planning, delivery management [Detailed article (Markdown)](https://portfolio.josedacosta.info/en/skills/project-management.md) **Stakeholder Management** (level 8/10) _Managing expectations and relationships_ Skilled in managing expectations, gathering requirements, and maintaining strong relationships with clients, executives, and team members. Keywords: client relations, requirements gathering, expectation management, reporting [Detailed article (Markdown)](https://portfolio.josedacosta.info/en/skills/stakeholder-management.md) ## Hard Skills Technical and professional competencies **Full-Stack Development** (level 10/10) _React, Next.js, Node.js, TypeScript expertise_ Expert in modern full-stack development with React, Next.js, Node.js, TypeScript. Proficient in building scalable, performant web applications. Keywords: React, Next.js, TypeScript, Node.js, Express, REST API [Detailed article (Markdown)](https://portfolio.josedacosta.info/en/skills/fullstack-development.md) **Cloud Architecture** (level 8/10) _AWS, Azure, GCP cloud solutions_ Experience designing and deploying cloud-native applications on AWS, Azure, and GCP. Expertise in serverless architectures, microservices, and cloud optimization. Keywords: AWS, Azure, GCP, serverless, microservices, cloud optimization [Detailed article (Markdown)](https://portfolio.josedacosta.info/en/skills/cloud-architecture.md) **DevOps & CI/CD** (level 9/10) _Docker, Kubernetes, CI/CD automation_ Proficient in implementing CI/CD pipelines, containerization with Docker, orchestration with Kubernetes, and infrastructure as code. Keywords: Docker, Kubernetes, CI/CD, GitHub Actions, Jenkins, IaC [Detailed article (Markdown)](https://portfolio.josedacosta.info/en/skills/devops-cicd.md) **System Architecture & Design** (level 9/10) _Scalable architecture and system design_ Strong foundation in software architecture patterns, system design, scalability, and performance optimization. Experience with microservices, event-driven architecture, and distributed systems. Keywords: architecture patterns, system design, scalability, microservices, event-driven [Detailed article (Markdown)](https://portfolio.josedacosta.info/en/skills/system-architecture-design.md) ## Academic competencies ### mba-strategic-project-management - [Strategic Analysis](https://portfolio.josedacosta.info/en/skills/strategic-analysis.md) - Conduct macro-economic (PESTEL), industry (Porter's 5 Forces), and internal (SWOT) diagnostics to position the company and identify key success factors. - [Business Strategy](https://portfolio.josedacosta.info/en/skills/business-strategy.md) - Master strategic models (BCG, McKinsey, Ansoff), Porter's competitive advantage, and design growth, innovation, and digital transformation strategies. - [Project Portfolio Management (PPM)](https://portfolio.josedacosta.info/en/skills/project-portfolio-management.md) - Select, prioritize, and balance a project portfolio, optimize resources, and manage overall portfolio performance. - [Budget and Financial Management](https://portfolio.josedacosta.info/en/skills/budget-financial-management.md) - Develop and track project budgets, analyze variances, calculate ROI, produce financial forecasts, and deliver financial reporting. - [Risk Management](https://portfolio.josedacosta.info/en/skills/risk-management.md) - Identify, analyze (qualitatively and quantitatively), and address risks through risk matrices, registries, and response strategies. - [Change Management](https://portfolio.josedacosta.info/en/skills/change-management.md) - Apply change models (Kotter, ADKAR, Lewin), support resistance to change, communicate change, and anchor new practices. - [Performance Evaluation (KPIs)](https://portfolio.josedacosta.info/en/skills/performance-evaluation-kpi.md) - Define KPIs, build performance dashboards, analyze results, practice benchmarking, and use Business Intelligence tools. - [Knowledge Capitalization](https://portfolio.josedacosta.info/en/skills/knowledge-capitalization.md) - Conduct lessons learned reviews, document insights, manage knowledge bases, and facilitate communities of practice. - [Lean Six Sigma](https://portfolio.josedacosta.info/en/skills/continuous-improvement-lean-kaizen.md) - Apply Lean Management principles (5S, VSM, Kanban), the DMAIC Six Sigma methodology, and statistical tools for continuous improvement. - [Data-Driven Decision Making](https://portfolio.josedacosta.info/en/skills/data-driven-decision-making.md) - Leverage data and Business Intelligence tools to guide strategic and operational decisions in a factual manner. - [Agile & Scrum Methodologies](https://portfolio.josedacosta.info/en/skills/agile-scrum-methodologies.md) - Apply the Agile Manifesto, the Scrum framework (roles, events, artifacts), estimation techniques, and Kanban methodology. - [International Collaboration](https://portfolio.josedacosta.info/en/skills/international-collaboration.md) - Intercultural management, international HR communication and ability to work with teams distributed across countries and cultures. ### master-software-engineering - [Functional Analysis & Requirements Engineering](https://portfolio.josedacosta.info/en/skills/functional-analysis-requirements.md) - Gather and analyze client needs, model functional specifications, and translate business requirements into actionable software requirements using techniques such as use cases, user stories, and requirements traceability matrices. - [IT Contract Law & Compliance](https://portfolio.josedacosta.info/en/skills/it-contract-law-compliance.md) - Understand IT contract law including SLAs, intellectual property, GDPR compliance, liability clauses, and legal frameworks governing software development and digital services. - [UX Design & Wireframing](https://portfolio.josedacosta.info/en/skills/ux-design-wireframing.md) - Design user-centered interfaces through UX research, wireframing, prototyping, usability testing, and applying design principles to create intuitive and accessible digital products. - [JavaScript Programming (OOP, Event-Driven, Async)](https://portfolio.josedacosta.info/en/skills/javascript-programming.md) - Master JavaScript programming paradigms including object-oriented programming, event-driven architecture, asynchronous patterns (Promises, async/await), and modern ES6+ features. - [TypeScript Development](https://portfolio.josedacosta.info/en/skills/typescript-development.md) - Develop type-safe applications with TypeScript, leveraging advanced type systems, generics, decorators, interfaces, and integration with modern frameworks and build tools. - [Angular Front-End Development](https://portfolio.josedacosta.info/en/skills/angular-frontend-development.md) - Build enterprise-grade front-end applications with Angular, including components, services, dependency injection, routing, reactive forms, RxJS observables, and state management. - [Java SE Programming](https://portfolio.josedacosta.info/en/skills/java-se-programming.md) - Program robust applications in Java SE, mastering core concepts such as collections, generics, streams, multithreading, I/O, and the JVM ecosystem. - [Java Spring & Hibernate](https://portfolio.josedacosta.info/en/skills/java-spring-hibernate.md) - Develop enterprise applications using Spring Framework (Boot, MVC, Security, Data) and Hibernate ORM for database persistence, transaction management, and RESTful API development. - [Advanced Git Workflows (GitHub & GitLab)](https://portfolio.josedacosta.info/en/skills/advanced-git-workflows.md) - Apply advanced Git workflows including branching strategies (GitFlow, trunk-based), pull requests, code reviews, CI/CD integration, and collaboration on GitHub and GitLab platforms. - [Kotlin & Android Mobile Development](https://portfolio.josedacosta.info/en/skills/kotlin-android-development.md) - Develop native Android applications using Kotlin, including UI design with Jetpack Compose, MVVM architecture, data persistence, API integration, and mobile-specific best practices. - [REST API Design & Implementation](https://portfolio.josedacosta.info/en/skills/rest-api-design.md) - Design and implement RESTful APIs following best practices including resource modeling, HTTP methods, status codes, authentication, versioning, documentation, and API security. - [SOLID Principles & Clean Code](https://portfolio.josedacosta.info/en/skills/solid-principles-clean-code.md) - Apply SOLID principles (Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, Dependency Inversion) and clean code practices for maintainable software. - [Software Architecture Patterns](https://portfolio.josedacosta.info/en/skills/software-architecture-patterns.md) - Design scalable software systems using architectural patterns such as layered architecture, hexagonal architecture, microservices, event-driven architecture, and CQRS. - [UML Complex Application Design](https://portfolio.josedacosta.info/en/skills/uml-application-design.md) - Model complex application designs using UML diagrams including class diagrams, sequence diagrams, use case diagrams, component diagrams, and deployment diagrams. - [Design Patterns (Gang of Four)](https://portfolio.josedacosta.info/en/skills/design-patterns-gof.md) - Implement Gang of Four design patterns (Creational, Structural, Behavioral) to solve recurring design problems and build flexible, reusable object-oriented software. - [Web Application Security (OWASP)](https://portfolio.josedacosta.info/en/skills/web-application-security-owasp.md) - Secure web applications by applying OWASP Top 10 guidelines, implementing authentication/authorization, preventing injection attacks, XSS, CSRF, and conducting security audits. - [Advanced Algorithms & Complexity](https://portfolio.josedacosta.info/en/skills/advanced-algorithms-complexity.md) - Analyze and design efficient algorithms, understand computational complexity (Big O notation), and apply advanced data structures and algorithmic strategies to solve complex problems. - [Functional Programming (Scala)](https://portfolio.josedacosta.info/en/skills/functional-programming-scala.md) - Apply functional programming paradigms using Scala, including immutability, higher-order functions, pattern matching, monads, and functional approaches to concurrent programming. - [NoSQL Databases (Redis, MongoDB, Cassandra, Neo4j)](https://portfolio.josedacosta.info/en/skills/nosql-databases.md) - Work with NoSQL database systems including Redis (key-value), MongoDB (document), Cassandra (column-family), and Neo4j (graph), selecting the appropriate model for each use case. - [Testing Strategy & Software Quality](https://portfolio.josedacosta.info/en/skills/testing-strategy-quality.md) - Define and execute comprehensive testing strategies including unit testing, integration testing, end-to-end testing, TDD/BDD practices, and software quality assurance processes. - [Machine Learning Fundamentals](https://portfolio.josedacosta.info/en/skills/machine-learning-fundamentals.md) - Understand and apply machine learning fundamentals including supervised/unsupervised learning, neural networks, model evaluation, and integration of AI capabilities into software applications. - [Cross-Functional Management](https://portfolio.josedacosta.info/en/skills/cross-functional-management.md) - Coordinate cross-functional teams, align diverse stakeholders, and manage transversal projects spanning multiple departments with different priorities and constraints. - [Design Thinking & Innovation](https://portfolio.josedacosta.info/en/skills/design-thinking-innovation.md) - Apply Design Thinking methodology to drive innovation, including empathy mapping, ideation, rapid prototyping, and iterative validation with end users. - [Business English Proficiency](https://portfolio.josedacosta.info/en/skills/business-english-proficiency.md) - Communicate effectively in professional English across technical documentation, presentations, meetings, and international collaboration with global development teams. ### bts-computer-science - [System Administration](https://portfolio.josedacosta.info/en/skills/system-administration-bts.md) - Install, configure, and administer Windows Server and Linux (Debian, CentOS) environments, including Active Directory, OpenLDAP, and group policy management. - [Network Infrastructure Design and Management](https://portfolio.josedacosta.info/en/skills/network-infrastructure-design-management.md) - Design, deploy, and maintain local and wide area networks including switches (VLAN, link aggregation), routers, secure wireless access points, and DNS/DHCP services. - [Network Security and Cybersecurity](https://portfolio.josedacosta.info/en/skills/network-security-cybersecurity.md) - Implement firewalls, intrusion detection/prevention systems (IDS/IPS), secure Wi-Fi configurations, and conduct vulnerability audits on servers and networks. - [Scripting and Automation](https://portfolio.josedacosta.info/en/skills/scripting-automation.md) - Develop scripts in Batch DOS, VBScript, and Bash to automate repetitive administrative tasks such as user provisioning and log analysis. - [Database Fundamentals](https://portfolio.josedacosta.info/en/skills/database-fundamentals.md) - Manage relational databases (MySQL, Microsoft Access, SQL Server), execute SQL queries, and ensure data integrity and backup procedures. - [IT Service Support and Incident Management](https://portfolio.josedacosta.info/en/skills/it-service-support-incident-management.md) - Diagnose and resolve hardware, software, and network incidents using ticketing tools (GLPI), remote support, and structured escalation procedures. - [IT Asset and Configuration Management](https://portfolio.josedacosta.info/en/skills/it-asset-configuration-management.md) - Inventory and maintain hardware, software, and licenses using tools like GLPI and OCS Inventory, ensuring compliance with organizational policies. - [Monitoring and Supervision](https://portfolio.josedacosta.info/en/skills/monitoring-supervision.md) - Deploy and configure monitoring tools (Nagios, Zabbix) to oversee infrastructure health, set alerts, and ensure service continuity. - [Service Deployment and Business Continuity](https://portfolio.josedacosta.info/en/skills/service-deployment-business-continuity.md) - Implement backup, restore, and disaster recovery procedures to guarantee IT service availability and business continuity. - [Team Collaboration and Project Management](https://portfolio.josedacosta.info/en/skills/team-collaboration-project-management-bts.md) - Work collaboratively using project management tools (MS Project, Gantt charts) and version control systems (CVS) within IT teams. - [Technical Documentation](https://portfolio.josedacosta.info/en/skills/technical-documentation.md) - Produce clear, structured documentation for IT procedures, network configurations, system architectures, and troubleshooting guides. - [User Communication and Technical Support](https://portfolio.josedacosta.info/en/skills/user-communication-technical-support.md) - Communicate effectively with non-technical users, translating complex IT concepts into accessible language and providing quality end-user support. - [Professional Technology Watch](https://portfolio.josedacosta.info/en/skills/professional-technology-watch.md) - Continuously monitor emerging technologies, security threats, and industry standards to maintain up-to-date technical knowledge. - [Regulatory Compliance Awareness](https://portfolio.josedacosta.info/en/skills/regulatory-compliance-awareness.md) - Understand and apply the French Data Protection Act (Loi Informatique et Libertes, CNIL), software intellectual property law, and IT security policies in effect during the BTS IG era. ### bac-pro-maemc - [Electrical Engineering & Electrotechnics](https://portfolio.josedacosta.info/en/skills/electrical-engineering-electrotechnics.md) - Electrotechnics, power circuits, electrical installations, automation and control, commissioning, and electrical safety certifications. - [Electronic Schematic Reading](https://portfolio.josedacosta.info/en/skills/electronic-schematic-reading.md) - Reading, interpreting and exploiting electrical, electronic and hydraulic schematics along with manufacturer technical documentation. - [Fault Diagnosis & Troubleshooting](https://portfolio.josedacosta.info/en/skills/fault-diagnosis-troubleshooting.md) - Electrical and electronic fault diagnosis, troubleshooting, preventive and corrective maintenance on complex technical equipment. ### bep-icef - [Intervention Planning and Organization](https://portfolio.josedacosta.info/en/skills/intervention-planning-organization-bep.md) - Analyze customer requests, prepare necessary equipment and tools, plan intervention steps, and work autonomously on job sites. - [Technical Communication](https://portfolio.josedacosta.info/en/skills/technical-communication-bep.md) - Communicate effectively with both technical and non-technical audiences, write intervention reports, and simplify technical concepts for end users. ### mc-vendeur-produits-multimedia - [Specialized Sales Techniques](https://portfolio.josedacosta.info/en/skills/specialized-sales-techniques.md) - Needs discovery, multimedia product knowledge, demonstration, merchandising, commercial communication and sales closing. - [Customer Advisory & Relationship](https://portfolio.josedacosta.info/en/skills/customer-advisory-relationship.md) - Customer needs analysis, tailored advisory, retention, after-sales service, and commercial practice compliance with consumer rights. ### CTO · Founder · technical director - [SEO, SEM & SERP Optimization](https://portfolio.josedacosta.info/en/skills/seo-sem-serp.md) - SEO, SEM and SERP analysis. France TOP 10 Carpediem affiliates, PageRank 5-6/10, 0.1-1% conversion rate. Organic search strategies across 260 multilingual websites (15 languages, 5 countries). - [Reverse Engineering](https://portfolio.josedacosta.info/en/skills/reverse-engineering.md) - Reverse engineering of Google, MSN and Voila.fr ranking algorithms. Custom algorithms to analyze the weight of each HTML element in SERP ranking. Advanced statistical analysis of ranking signals and algorithmic vulnerability detection. ## Skill categories Skills in this portfolio are grouped under the following categories for filtering and navigation: - Agile & Methodologies - Architecture & Design - Communication & Collaboration - Data & AI - DevOps & Cloud - Electronics - Infrastructure & Networks - Leadership & Management - Project Management - Security - Software Development - Strategy & Finance ## Visual analytics (interactive charts on HTML page) - **Skill Mastery Gauges** - Each core skill with its mastery level and number of career experiences contributing to it - **Skills by Career Phase** - Average confidence levels per skill category across major career periods - **Skill Growth Over Time** - How skill categories have grown from 1997 to today, based on confidence levels across career milestones - **Comparative Analysis** - All skills compared to each other, showing relative levels and rankings - **Detailed Breakdown** - In-depth information about each skill with keywords and descriptions ## Coming Soon: Detailed Skill Articles Each skill will have a dedicated article with real-world examples, projects, and in-depth analysis. Stay tuned for comprehensive insights into each competency. Full interactive view with dashboards, gauges, and comparative analysis: https://portfolio.josedacosta.info/en/skills